Collapsible tube spraying machine



y 0, 1943. 5. w. TEMPLE 2,324,890

COLLAPSIBLE TUBE SPRAYING MACHINE Filed Aug. '7, 1941 v 4 Sheets-Sheet l INVENTOR ZTTORNEY July 20, 1943. G. w. TEMPLE ICOLLAPSIBLE TUBE SPRAYING MACHINE Filed Aug. 7, 1941 4 Sheets-Sheet 2 a Gaorye vffifie B/ ATTORNEY July 20, 1943.

'G. W. TEMPLE COLLAPSIBLE TUBE SPRAYING MACHINE Filed Aug. 7, 1941 4 Sheets-Sheet 3 ATTORNEY July 20, 1943. w. TEMPLE 2,324,890

COLLAPSIBLE TUBE SPRAYING MACHINE Filed Aug. 7, 1941 4 Sheets-Sheet 4 Geor e w 95%;

Patented July 20, 1943 UNITED STATES 2,324,890 COLLAPSIBLE runs SPRAYING MACHINE George V. Temple, Flushing, N. Y.,

assignor to Victor Metal Products Corporation, Brooklyn, N; Y.,' a corporation of New York I Applicationhugust *7, 19-41, Serial No. 495,734

Claims.

This invention relates to spraying machines and particularly to those designed automatically to handle and spray extremely thin and hence easily damaged collapsible tubes.

Such tubes are usually made of tin, lead, aluminum and other metals which are sometimes chemically attacked by the tube contents. In such cases it has been customary to spraythe interior of the tubewith a suitable coating and thereby to prevent the undesirable chemical action. The hand spraying methods and manually operated apparatus for accomplishing'thespraying heretofore have proved to be. uneconomical and unsatisfactory.

This invention therefore contemplates the provision of a machine for automatically accomplishing the mounting; discharge and spraying of the interior of collapsible tubes rapidly and efiiciently and without the necessity for any manual handling of the tube or manual operation of theap paratus.

The invention further'contemplates the provision of a machine for automatically mounting the tubes in succession on the holders of an intermittently movable turret, for moving a sprayer into the interior and out of a mounted tube, and for spraying the tube during the withdrawal oi the sprayer while the tube is'rotated to produce the even coating of the tube, and iorheating the coated tube and automatically ejecting it from the holder after the coating has dried.

The invention iurther. contemplates the provision of a machine wherein the tubes, the spraying liquid, and the air used for accomplishing the spraying are all pro-heated before th'esp'raying operation, and the coated tubes heated'aiter the spraying operation for a sufii'cient time to thoroughly dry the coating, whereafter the tube is automatically dismounted and discharged from the machine, provision being made to halt the machine should the machine fail to discharge the coated tube.

The invention further contemplates the provision of means for adequately holding and rotating the tube during the spraying thereof while permitting the tube to be easily dismounted when desired.

The various objects of the invention will be clear from the description which follows and from the drawings, in which, I

Fig. l is a top plan view of the machine.

Fig. 2 is a front elevation of the same. 7,

Fig. 3 is a side elevation of the same, as viewed from the left of Fig. 2., 1

1 charge the tube therefrom,

2Q plurality of tube holders l i;

to engage the open end oi thereof through .35 rotated.

reaches 50 motor 20.

Fig. 4 is a vertical longitudinal section'oi the tube-holding and rotatingmeans.'v

Fig. 5 is an enlarged vertical. section or" discharge end of the sprayer.

Fig. 5 is a cross-section of the same. 3

Fig. 7 is a fragmentary side View the right hand end of the machine as viewed inl ig. 2, showing the safety switch designed to. halt the machine on the iailure'oi the machine todisand also showing a modified iorm oi the tube-rotating means.

Fig. 8 is a fragmentary top plan view of the tube discharge means and its. operating mechanism.

15 In the practical e ibodiment of the invention shown by way, oi example, the tubes 9 (FigJl) to be coated are to the inclined chute down'whlch they roll ag inst a suitable step into position for the mocnting'thereoi in oneof the Each of said holders is hollow to receive andfit the'tub snugly and is rotatably mounted in the turret 52. Reciprocating meansiincluding the mounting slide i2 (Fig. 2) provided with the mounting member it he tube, are emplayed to insert the tube into the holder H at the mounting station while the: turret i2 is at rest. Simultaneously, the sprayer i 5 is inserted into. another tube to a point close to the neck end viously mounted a holder. 0n the withe drawal oi the slide 13, suitable atomized-liquid is forced under pressure through the sprayer, while the holder and the tube c d;thereby are After leaving the spra5. g station, tube and itsnolder pass through aheating chamber it for the desired time necessary to evaporate the solvent carrying the coating material, the coating being completely dry by the time the tube its dismounting' station. At; the dismounting station, a suitable nozzle i-l engages the end of the holder and fluid under pressure such as compressed air is forced through the holder and against the shoulder at the neck; end

of the tube to dismount the tube from the holder.

Should the apparatus [all to dismount the tube as it should, the lever l8 (Fig. '7) istrippedby the retained tube, to cause the switch it to open, thereby cutting off the current to the operating The machine therebyhaltedend damage to the remaining tubes is prevented. The safety switch 19 is preferably. connected to a suit. able starter switch of. any well-known type," not necessary to be shown nor described, by suitable means which causesthe starter switch to open the open end cuthe tubepre when the safety switch i!) is open. It then becomes necessary first to close the starter switch before the machine can be again started, since closing of the safety switch 211 so will not c t. the circuit to the motor nor start the machine.

The machine will now be described in detail.

The turret I2 is mounted on th turret shaft 2 l2 carrying the Geneva wheel 2 i. Said wheel is provided with a series of radial slots 22, one for each of the holders H. The Geneva pin 23 carried by the cam 24 on the shaft 25 enters each of the slots successively to rotate the turret intermittently one step at a time on each rotation of the shaft 25. To drive said shaft, the larger gear 26 thereon meshes with the smaller gear 21 on the sleeve 28. The pulley shaft 33 passing through the sleeve 28 carries th pulley 29 and also carries the clutch member 3| which is keyed to said shaft 30 for sliding movement relatively thereto and for rotation therewith. the pulley 29 to the reduction gear pulley 32 operated by the motor 20, is the belt 33. Consequently, on operation of the motor and the shifting of the clutch member 3! by means of the handle lever 34 to engage the clutch member 3| with the clutch member 35 on the sleeve 28, said sleeve is operatively connected to the pulley shaft 30 and through the gears 21 and 26 causes the cam 24 to rotate and to carry the Geneva pin into a. slot 22 on the Geneva wheel, thereby to advance the turret and the holders ll carried thereby each one step.

As best seen in Fig. 4. each of the holders H comprises a sleeve 36 having an enlarged end portion 31 adapted to frictionally receive and hold the tube 38 to be sprayed. Said sleeve is revolubly mounted in suitable bearings as 39 in the turret l2 and is provided with a pulley or disc 40 fixed thereto at the outer end thereof whereby the sleeve may be rotated relatively to the turret. Fixed within the sleeve is the pipe member 4! provided with discharge openings as 42 in the tapered end 43 thereof. Said tapered end closes the neck of the tube against the discharge of spraying material if the neck is open. If the neck is closed or capped, the tapered end of the member 4| merely engages the end of the closed neck or the cap to limit the position of the tube in the holder. Compressed air forced through the passage of the holder formed by the pipe and through the discharge openings 42 of the member 4| against the tube shoulder, blows the tube out of the holder after the tube has been coated and dried and is ready for discharge from the machine. It will be understood that the holder II i continuously rotated at least during the spraying operation for a sufficient time to spread the coating evenly thereon. For this purpose, the belt 44 (Fig. 3) engages a selected series of discs or pulleys 40 on a number of the holders, said belt being driven by the pulley 45 on th shaft 46 through the pulley 41 on said shaft. The pulley 41 is in turn driven by the belt 48 through the motor pulley 49. A modified form of the holder-rotating means is shown in Fig. 7 and will be later described. In such form, only the tube being sprayed is rotated.

The tubes are mounted on the holders 3 i successively at the mounting station indicated by the numeral 50 (Fig. 3) when the holder reaches said station. The operator supplies tubes to the machine by arranging said tubes on the inclined chute I0 with the necks of the tubes arranged toward the left as viewed in Fig. 1. The tubes roll down said chute until they reach the gate 5| Connecting (Fig. 1), which at that time is down or in its lowermost position to halt the row of tubes. The second gate 52, however, is in its up position, but is lowered between the lowermost and the succeeding tubes of the row when the gate 5! is lifted. Lifting the gate 5| whil the gate 52 is down permits the lowermost tube to roll further down the chute until halted by the stop 53 (Fig. 8) at the lowermost end of the chute in position for mounting in the holder. After the last tube has thus been released, the gate Si is lowered and the gate 52 raised to permit the row to slide against said gate 5|, whereafter the gate :32 is lowered and the operation repeated. One tube at a time is thereby fed to the mounting station.

The means for operating the gates is the same for each of the gates and is best seen in Fig. Each gate is connected at its upper end with a lever 54 pivotally mounted as at 55 and operated by a vertically reciprocating rod 56. Each rod 56 is reciprocated by means of a lever 51 pivoted to the frame of the machine as at 53 (Fig. 2) and connected with the lower end of the rod. Each lever 51 is oscillated about its pivot by means of a cam 59 on the shaft 60. Said shaft terminates at its rear end in the bevel gear 6! meshing with the bevel gear 62 on the shaft 63. The shaft 63 carries the gear 64 (Fig. 3) meshing with the gear 65 on the shaft 25, whereby the shaft is continuously rotated and the gates alternately raised and lowered in accordance with the operation of the respective levers 51 and rods 56 by their respective cams 59. v The means for mounting the tube resting against the stop 53 on to its holder at the mounting station 50 comprises the mounting member :4 carried by the slide l3, said slide being mounted for horizontal reciprocation in the fixed guide 68. Said mounting member I4 is provided with a. flat surface to engage the end of the tube and to forward said tube toward the left as viewed in Fig. 2, thereby to insert the end portion of the tube into the enlarged portion 31 of the holder H. A conoidal projection on the member 14 enters the interior of the tube and not only prevents the end from buckling under the pressure thereon, but also centers the tube accurately for the mounting operation. t will be understood that the innermost diameter of the holder part 31 is such that the inner surface of said holder snugly fits the exterior cylindrical surface of the tube and holds said tube frictionally, but removably, in place during the spraying and drying operations. The fit, however, is not too tight to permit the tube to be discharged from the holder by a. blast of air.

To reciprocate the slide l3 and thereby to cause the member I4 to mount the tube in the holder, a crank 69' is pivoted to the slide at one end 19 while the other end thereof is pivoted to the lever 1| which is in turn pivoted to the frame of the machine as at 12 and carries the a-d justable weight 13. The lever is oscillated at the proper time to reciprocate the slide 13 by means of the rod 14 pivoted at one end to the lever 1| and at its other enlarged end 15, being provided with a slot through passes. The cam 16 on the shaft 60 (Fig. 1) engages the roller 11 on the end 15 of rod 14 and moves said rod toward the right, as viewed in Figs. 1 and 2, thereby oscillating the lever 1! in a clockwise direction and moving the slide i3 toward the right to position the member i 4 ready for the mounting operation. When the roller 17 is released by the cam 16, the weight 13 operates completely dried in the timeit takes the tube to move to the dismounting station. For this purpose, ahood H4 is arranged around the turret adjacent to the open ends of the coated tubes carried by the various holders. Hot air may be supplied to the hood by a suitable pipe leading from the hot' air pipe 81, or any well-known electrically operated heating element may be arranged in the hood to heat the tubes. in the pipe 81 is heated by a suitable heating element II5 carried by the casing 88. Any fumes resulting from the quick evaporation of solvent are drawn out of the hood I I4 by the suction fan I05 through the exhaust pipe I20.

The dried tube is discharged atthe dismounting station indicated by the numeral I2I (Fig. 7), the dismounted tube falling into the inclined discharge chute I22 and being conducted out of the machine. As b'est seen in Fig. 8, the means for discharging the tube compris'esthe nozzle II loosely mounted in the jaw I24 of the bell-cranklever I25. Said lever is pivoted as at I26 to the frame of the machine and carries the cam roller I28 engaging the cam 24.' The spring I29 connected to the bellcrank-lever and to a fixed part of the machine maintains the roller in contact with the cam. Interposed between the end of the nozzle I! and a second jaw I30 fixed to the lever I25, is the spring I3I which urges the nozzle through the jaw I24 and into the bevelled end I32 of the holder sleeve 36. The discharge end of said nozzle is suitably tapered to form a substantlal air-tight connection between the nozzle and "said sleeve during the tube-dismounting operation. A suitable stop I33 on the nozzle engages the jaw I24' to prevent the nozzle from being moved by the spring completely through the jaw. It will be-seen that the bell-crank-lever I25 is oscillated at the proper time by the cam 24 to carry the nozzle II into the sleeve ready for the dismounting of the tube at the dismounting station I2I. A blast of compressed air through the nozzle acts upon the shoulders of the tube 38 and blows the tube out of the holder portion 31 on tothe chute I22. Said blast is controlled by means of the cam I35 (Figs. 1 and 3) carrying the pin I36. Said pin engages the lever I31 pivoted to the frame of the machine as at 58 and normally resting on the stem I39 of the air inlet valve I40 (Fig. 2). On the rotation of the shaft 60, the pin I36 engages the lever I31 and depresses said lever to depress the valve stem I39 and to open the valve to the pipe I34, thereby to discharge compressed airthrough the nozzle and therethrough through the pipe M of the tube holder and against the tube shoulder to dismount thetube.

Safety means are provided, however, to halt the machine should the air blast fail to dismount the tube at the ejecting station I2I. As has been hereinbefore mentioned, said means comprises the lever I8 pivoted to the frame of the machine as at MI and having an arm I42 adjacent the switch arm I43 of the safety switch I9. The other arm of the lever I8 projectsinto the path of the open end of'the tube. Should the tube not be discharged from its holder at the disnounting station, the end of the tube engages the lever II8 and trips said leverv thereby operating the switch arm: I43 to open the'switch I9 to the motor 2'0.-;-. Current being thereby cut oil from the motor, said motor ceases its rotation and further rotation of the turret I2 and further operation of the machine is halted until the switch I8is again deliberately closed.

interposed in As best seen in Fig.7, for the belt 44 may be substituted means for rotating the holder II only when it reaches the spraying station. Such rotation may be comparatively rapid to spread the coating material evenly on the inner surface of the tube. As shown, themotor I50 provided with a suitable pulley I54 drives the pulley I 55 on the shaft I5I by means of the belt I51. Said shaft is yieldingly supported by the lever I52 pivoted to the motor shaft, the spring I53 serving to draw the holder-rotating disc I56 0n the shaft I5I into contact with the holder pulley 40 or a disc substituted for said pulley. It will thus be seen that as the turret rotates in a clockwise direction, as viewed'in Fig. 7, the holder pulley or disc engages the continuously rotating disc I56 and is rapidly rotated while the turret is at rest, thereby rotating the holder part 31. When the turret is again advanced, the holder pulley or disc pushes the pulley I55 and disc I56 out of its way in a counterclockwise direction against the action of the spring I53, said spring drawing the disc I56 in a clockwise direction into its operative position against the pulley or disc of the next holder after the preceding holder has passed the disc I56 and the turret is again at rest.

To assist the geneva pin 23 in maintaining the turret at rest during the mounting, spraying and dismounting operations and to stop the turret at its proper station, a suitable brake as I59 (Fig. 2) may be fixed to the machine frame and the path of the holders II Said brake as shown comprises a curved member of sheet metal having a free end portion yieldable when engaged by the tube holder and resisting movement of the holder therepast.

It will be understood that the mounting of a tube on the station 50, the spraying of another tube at the station I8, and the dismounting of a third tube at the station I2I occur simultaneously and while the turret is at rest. It will also be understood that the turret is of sufiicient diameter to carry a comparatively large number of tube holders so that sufficient time elapses from the time the tube is mounted and sprayed to the time it is dismounted to thoroughly dry the tube coating. It will further be understood that the tubes on the chute III may be pre-heated to some extent prior to the mounting thereof on the station 50 by means of a suitable lamp I45 or other heating element. The coating liquid is also preferably heated so that by the use of heated tubes, hot air and heated coating liquid as well as the heating of the hood II4, the drying time may be controlled and hastened. V

It will therefore be seen that I have provided a machine for automatically mounting, coating and discharging thin and comparatively fragile collapsible tubes in an efficient manner and that the machine is well adapted to fulfil the purpose for which it is intended.

While I have shown and described certain specific embodiments of the invention; I do not wish to be understood as-limiting myself thereto, but intend to claim the invention as broadly as may be permitted by the state ofthe prior art and the scope of the appended claims.

I claim:

1. In amachine for coating the interior surface of collapsible tubes, a hollow tube holder, means for intermittently moving the holder to a mounting station, a spraying station and an ejecting station, reciprocating means at the mountingstation to mount a tube in the holder, means for rotating the holder, means for spraying the tube interior at the spraying station while the holder is rotating, means between the mounting and ejecting stations to heat the coated tube, and means at the ejecting station to engage the holder and to direct. fluid under pressure against the end of a tube in the holder to eject the tube. I r 2. In a machine for coating the interior surface of collapsible tubes, a revoluble tube holder, means for moving the holder from station to station, means at one station for mounting a tube having an open end in the holder, reciprocatory means at another station movable within the mounted tube on the holder for spraying and coating the interior of the tube, relatively fixed means for heatingthe coated tube, and means at another stationior ejecting the heated. tube.

3. In a machine for coating the interior surface of collapsible tubes, a revoluble tube holder, means for mounting a tube having an open end in the holder, reciprocatory means movable within the tube for spraying and coating the interior of the-mouned tube during the rotation of the holder, relatively fixed, means for heating the coated tube, means 'coacting'with the holders for ejecting the tube from the holder, and means movable to a position adjacent the open end of the tube for applying suction to the-"interior of the tube while said tube is in the holder and is being coated by the spraying means.

(i. In a machine for coating the interior surface of collapsible tubes, a revoluble tube holder, means for mounting a tube having an in the holder, reciprocatory means movable within the tube for spraying and coating the interior of the mounted tube, relatively fixed means for heating the coated tube,means 'coacting with the holder for ejecting the tube from the holder, and means responsive to'the movement of a'tube maintained in the holder onthe failure of the ejecting means to eject said tube for halting the machine.

; In a machine for coating'the interior sur face of collapsible tubes, aplurality of revoluble, hollow tube holders, means for successively mounting tubes in frictional Contact with the inner walls of said holders, means for rotating the holders'about the respective axes thereof, reciprocating means movable within the successivemounted tubes for coating the tubes successively during the rotation of the holders, means movable around the inner open ends of the successive mounted tubes for exhausting exce'ss coating material from the tubes during the operation of the coating means, means for intermittently advancing the holders for a sufiicient period to dry the coated tubes, and means for cjecti the dried tubes from the machine.

en's machine for coating the interior surface of collapsible tubes, a hollow tube holder, means for rotating the holder, means for intermittently advancing the holder, 'means for mounting a tube in the holder, a spraying nozzle, means for reciprocating the nozzle into and out of the tube mounted in the holder, means for forcing coating material through the nozzle on the withdrawing movement of the nozzle out of the tube, reciprocating means movable into and out of a position substantially concentric with the inner open end portion of the mounted tube and operative on the withdrawing movement of the nozzle to exhaust excess coating material from the tube and the nozzle, and means open end suction member movableto a position for forcing compressed air against the other end of the tube to eject the tubefrom the holder.

'7. In a machine for coating the interior surface collapsible tubes, means for mounting a tube "ll/hf) machine one station, means responsive to fluid under pressure for simultaneously ting, the interior of a mounted tube at another station, means for reciprocating the coating into-and out of the mounted tube, air bh means for simultaneously ejecting a coats l tube from the machine at a third station for reciprocating the air blast means -.no out of the tube-ejecting position l a machine for coating the interior surcoilapsible tubes, a turret, means for into, -attently rotating the turret, a plurality of revoluble hollow tube holders mounted in the turreua 1; in each of the holders, and means fluid under pressure through the pipe of a selected holder to eject a tube carried by the holder said means comprising a nozzle having a tapered-inner end, and means for moving the nozzle parallel to the axes of the turret and the holder intoair-tight contact with the outer end of the pipe while the turret is at rest, and then outwardly away from the pipe prior to the next movement of the turret. I V

9. In a collapsible tube spraying machine, a tub holder comprising a sleeve terminating in an enlarged hollow end part adapted to receive a collapsible tube, means for intermittently advancing the holder including a turret carrying. the holder, means for rotating the holder, and a pipe within the sleeve and having an imperiorate end part thereof arranged in the enlarged part of the holder in position to engage the outer end part of a tube positioned within the holder.

-10. In a collapsible revoluble tube holder having a relatively short end part provided with a cylindrical recess adapted to have a tube mounted therein with part or the tube projecting therefrom, ans'air last passage in the holder to direct compressed air against the other part of the tube held by the holder, and exhaust means including a ring concentric with the'holder, an exhaust chamber carrying the ring, and means for movingthe ring and the chamber into a position around the projecting part of the tube, to apply suction to said projecting part.

11. In a collapsible tube spraying machine, a pair of tube holders, meansf-or mounting a tube in one holder including a slide, a mounting memb-er arranged to engage the open end of the tube and. carried by the slide, and means to reciprocate the slide,'a spraying nozzle carried coaxially oi the ctherholder by the slide into and out of a tu s mounted on the other holder on thereciprocaticn of, the slide, meansfor discharging coating material from the nozzle on the withdrawing movement of the nozzle, means for rotating the holders, means for intermittently moving the holders, a reciprocating spring-pulled adjacent theop'en end of the tube, and cooperating means on theislide-and-the member for reciprocating member through a limited stroke shorter than the stroke of the slide.

33. In a collapsible tube spraying machine, a tube'holder, a reciprocatory. slide, a tube mounting member carried by the slide, tube spraying means carried by th slide, and a spring-pulled suction member to exhaust excess tube coating material from a tube in the holder, said suction tube spraying machine, a

member being mounted for reciprocation in a direction parallel to the reciprocatory movement of the slide and provided with a projection arranged in the path of the slide, said projection being engaged by the slide and moved thereby during a selected part of the movement of the slide suiTiciently to position the suction member around the inner end of the tub in the holder.

13. In a collapsible tube spraying machine, a revoluble tube holder to hold a tube with the open end portion of the tube projecting from the holder, 3. sprayer, means for relatively reciprocating the sprayer and the holder to carry the sprayer into and out of the holder, means for supplying spraying material to the sprayer to coat the interior surface of a tube mounted in the holder during the relative withdrawing movement of the sprayer and during the rotation of the holder, means including an exhaust chamher for exhausting excess material from the tube and the sprayer, and means for moving the chamber around the projecting end part of the tube and away from the tube alternately.

14. In a collapsible tube spraying machine, a revoluble tube holder provided with an air passage therethrough, and means for delivering a blast of air through the holder to dismount a tube held thereby including a reciprocatory airconducting nozzle having an end portion shaped to engage the end of th holder to form a substantially air-tight joint therebetween, a compressed air pipe leading to the nozzle, means for reciprocating the nozzle alternately into contact with and away from said end of the holder, and means for controlling the air delivered to the nozzle.

15. In a collapsible tube spraying machine, a revoluble tool holder provided with an air passage therethrough, means for mounting a tube in the holder, means for rotating the holder, means for spraying the inner surface of said tube during the rotation of th holder, and means for dismounting the tube from the holder including a reciprocating air-conducting nozzle having an end portion arranged to engage and form a substantially air-tight joint with the outer end of the passage.

16. In a collapsible tube spraying machine, a turret, a plurality of tube holders revolubly mounted in the turret and each having an air passage therethrough, means for intermittently advancing the holders successively to a. tube mounting station, a spraying station and a tube dismount-mg station, reciprocatory means at the mounting station to mount a tube on the holder, reciprocatory means at the spraying station to enter and leave and to spray the inner surface of the mounted tube, means for simultaneously reciprocating the mounting means and the spraying means, said spraying means including a nozzle having non-radial discharge ports to produce a whirling spray, means to control the discharge of spray from the nozzle to limit the operation of the spraying means to the withdrawal movement thereof out of the tube, means for rotating the tube holder during the spraying operation, and tube dismounting means at the dismounting station, said means including an air-conducting nozzle and means to reciprocate said nozzle up against and away from the outermost end of said air passage.

17. A machine according to claim 16, an exhaust member provided with an exhaust chamber, means for reciprocating the member through a selected part of the stroke of the spraying and mounting means to position the exhaust memher around an end of the mounted tube during the spraying operation, and means to exhaust material from the chamber.

18. In a collapsible tube spraying machine, a

pair of parallel, hollow, revoluble tube holders in spaced relation to each other, each having an air passage therethrough and provided with a pulley adjacent one end thereof and a tubereceiving recess at the other end thereof, a first slide, a tube-mounting member carried by the slide coaxially of the holder to push upon the open end part of a tube and to mount the tube in the recess, means for rotating the pulley of the other holder during the spraying operation, spraying means on the slide reciprocating in coaxial alignment with said other holder to spray the tube held thereby, a second slide mounted for movement parallel to the movement of the first slide, and cooperating means on the slides to move the second slide during part only of the movement of the first slide, and an exhaust chamber on the second slide carried thereby around the open end of the tube in the second holder to exhaust excess spraying material therefrom.

, 19. In a collapsible tube spraying machine, a tube holder, a slide, means for reciprocating the slide in a direction parallel to the axis of the holder, spraying means carried by the slide sub stantiallycoaxially of the holder and into and out of the holder, an exhaust chamber, slidable means carrying said chamber coaxially of the holder and into operative relation to a tube in the holder, and cooperating elements on the slide and slidable means for reciprocating the slidable means through a limited stroke shorter than the stroke of the slide.

20. In a collapsible tube spraying machine, a tube holder having an air passage therethrough, one end of said passage being tapered and the other end communicating with an enlarged end recess in the holder suitable for the reception of the neck end part of a collapsible tube having a neck end and an open end, reciprocating means for engaging the open end of a tube'and pushing the tube into the recess, means for advancing the tube holder with the mounted tube therein to a spraying station and to an ejecting station, means at the spraying station to spray the interior of the tube, and means at the ejecting station to eject thesprayed tube comprising a reciprocating member tapered to engage the tapered end of the passage in the holder and having a passage therein for conducting fluid under pressure to the passage in the holder.

GEORGE W. TEMPLE, 

